Expansion joint



Jam 26 1926.

J. J. MILAR EXPANSION JOINT Filed June 1, 1922 INVENTOR 7%(LZWI/ ATTORNEY Patented Jan. 26, 1926.

um Eo sTATes' PATENT OFFICE.

JAMES J MILAR, OF CHICAGO, ILLINOIS, ASSIGNOR TO TIIE PHILIP CAREY MANUFAC- TURING COMPANY, A CORPORATION OF OHIO.

EXPANSION JOINT.

Application filed June \1,

To all whom it may concern.

Be itknown that I, JAMES J. MILAR, a citizen of the United States, and a resident of Chicago, in the county of Cook, State of Illinois, whose post-oflice address is 3611 Loomis Place, Chicago, 111., have invented new and useful Improvements in Expansion Joints, of which the following is a specifiation.

My invention relates to expansion or contraction joints. It is addressed to providing a joint material or filler which can be placed between adjacent sections of a roadway, pavement, or construction, where it is desired not only to have adjacent sections independent of each other, but! to lock them in alignment and prevent one from rising,

or riding up, above or over the other, while at the same time providing means to permit of expansion or contraction of either or both of the adjacent sections.

In the preferred form of my invention, shown in the drawings, I provide an elastic form of expansion or contraction joint which when placed between adjacent sections of a,

construction not only maintains the independence of the sections but affords a filler between them whether the space is, because of the expansion of the sections, at its minimum. or whether it is, because of the contraction of the sections, at its maximum. This results in preventing foreign matter from entering between the sections to disrupt the construction or otherwise cause dz mags thereto.

My improved expansion. or contraction joint when used in concrete work may be place] in position to form a wall of the mold, into which the concrete is poured to form a section, and it will also as the concrete is poured and sets form on one section a tongue and on the adjacent section a groove into which the tongue projects, and with which it registers, thereby locking the sections together while providing a cushion between.

I also provide means passing from one section to the next adjacent section through the joint for locking adjacent sections together.

' In the drawings;

Fig. 1 is a vertical cross section Of my 6X- :pansion .or contraction joint: 4

Fig. 2 is a side view of same;

' into the ground.

1922. Serial no. 565,104.

Fig. 3 is a vertical cross section of a modification of Fig. 1. K

Fig 4 shows one method of installing my oint In building a concrete roadway.

In the drawings A is a body of bituminous material either with or without a filler, B, B, are plies of flexible elastic bituminous saturated material, such as felt saturated with asphalt which serve as reinforcements for the asphalt, as a means to hold it in form,

and also to enable to be packed for,

shipment. The joint is formed so as, preferabl y, to have a tongue like- C projection each other.

To enable the joint to' be readily installed and to hold it in desired vertical position, I provide vertical openings G, G, through which a pin H may be passed and driven The tongue and groove can bemade of any desired form in addition to the two illustrated in the drawings. I prefer however to always form my joint so that it will have two,vertical members one above and one below the tongue and groove as shown in my drawings. I also prefer to form my joint so that it will be divided into three equal vertical portions, thatis, the portion occupied by the projecting part forming the tongue and groove will be the same as either of the vertical portions above or. shown in the drawings.

I claim- 1. An expansion joint consisting of a body of-plastic material arranged between flexible elastic compressible non-deteriorating members, the whole so arranged as to form members in substantially the same plane on opposite sides of a member integral with said last mentioned members but in a different plane.

2. An expansion joint conslstmg of a vbelow as body of bituminous material having 9, flexibl'e elastic compressible reinfbrcement therefor the whole arranged to form a joint having along the longitudinal center outwardly extending Pmtidh i .ofie s de ani st rresponding inwardly extending ptirtion's on the opposite side.

3. In a preformed expansion joint a board like plastic body having a tongue Onone side,

Ill

a corresponding groove on the opposlte side, and a flat portionarranged to one side of said tongue and groove. 4 v, p H

4. In a preformed expansion joint a board like plastic body-,having a tongue on one side, a corresponding groove on the opposite side, and a flexible waterproofed reinforcement.

In a P ement rm d o seeder h end o O e-edit on, being. pr ide w th tongue d th ediwntend t. t. e i pre wi h w rs' rod n ere a 1 formed expansionjoint locate within the space between sai sections formed of a bituminous mate 'al having a tongue to reigister with the 'grooveof saidsection, and a groove to registerwiththetongue of said section, and means passing through said joint and into adjacent sections of pave-- ment.

;6. An expansion, joint composed of an elongated body'ofbi'tuminous material having a longitudinal tongue on one side and in for the purpose of forming a groove corresponding with said tongue on the opposite side, and means in said joint arranged to engage supports for holding said joint in plaoe before the adjacent sections of construction are in place.

7. An expansion joint composed of a body of bituminous material, flexible elastic compressible reinforcement therefor, formed into a board like structure, having two longitudinally extending flat portions arranged on opposite sides of a longitudinally extending portion one faceof which bulges outward and the other face of which extends into and registers with the bulging portion, and openings in said bulging portions arranged laterally of said joint.

8. In a. concrete roadway, a channel shapedstrip adapted to be embedded therea contraction joint, said strip being formed with vertically aligned holes in the walls of said channel for receiving supporting stakes to hold said strip in position until embedded. I

9. In a contraction joint, a channel shaped strip, vertically aligned holes in the walls of said channel for receiving supporting stakes to hold said strip in position while being installed.

p In testimonywhereof, l have signed my name to this specification.

JAMES dz- MltLAlt. 

